From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755044AbcBIIOk (ORCPT ); Tue, 9 Feb 2016 03:14:40 -0500 Received: from mail-lf0-f65.google.com ([209.85.215.65]:36743 "EHLO mail-lf0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754382AbcBIIOd (ORCPT ); Tue, 9 Feb 2016 03:14:33 -0500 From: Antony Pavlov To: linux-mips@linux-mips.org Cc: Marek Vasut , Wills Wang , Daniel Schwierzeck , Alban Bedel , Alan Stern , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC v5 07/15] usb: ehci: add vbus-gpio parameter Date: Tue, 9 Feb 2016 11:13:53 +0300 Message-Id: <1455005641-7079-8-git-send-email-antonynpavlov@gmail.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1455005641-7079-1-git-send-email-antonynpavlov@gmail.com> References: <1455005641-7079-1-git-send-email-antonynpavlov@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch retrieves and configures the vbus control gpio via the device tree. This patch is based on a ehci-s5p.c commit fd81d59c90d38661 ("USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer"). Signed-off-by: Antony Pavlov Cc: Alan Stern Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/usb/host/ehci-platform.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index bd7082f2..0d95ced 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -142,6 +143,25 @@ static struct usb_ehci_pdata ehci_platform_defaults = { .power_off = ehci_platform_power_off, }; +static void setup_vbus_gpio(struct device *dev) +{ + int err; + int gpio; + + if (!dev->of_node) + return; + + gpio = of_get_named_gpio(dev->of_node, "vbus-gpio", 0); + if (!gpio_is_valid(gpio)) + return; + + err = devm_gpio_request_one(dev, gpio, + GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED, + "ehci_vbus_gpio"); + if (err) + dev_err(dev, "can't request ehci vbus gpio %d", gpio); +} + static int ehci_platform_probe(struct platform_device *dev) { struct usb_hcd *hcd; @@ -174,6 +194,8 @@ static int ehci_platform_probe(struct platform_device *dev) return irq; } + setup_vbus_gpio(&dev->dev); + hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev, dev_name(&dev->dev)); if (!hcd) -- 2.7.0